Identification and recording devices



Nov. 23, 1937. E. W. DAVlS Er AL IDENTIFICATION AND RECORDING DEVICEOriginal FIled Oct. 10, 1931 2 Sheets-Sheet l K 1101712 L 7 h Nov. 23,1937. E. w. DAVIS -r AL 2,099,679

IDENTIFICATION AND RECORDING DEVICE Original Filed Oct. 10, 1951 2Sheets-Sheet 2 I IV Wail 72% Patented Nov. 23, 1937 l h 2,099,679

UNITED STATES. PATENT OFFICE IDENTIFICATION AND RECORDING DEVICES ElmerW. Davis, Newton Center, Mass., and Arthur H. Maynard, Warwick, R. L,assignors to Boston Wire Stitcher Company, Portland, Maine, acorporation of Maine Original application October 10, 1931, Serial No.568,048. Divided and this application March 6, 1935, Serial No. 9,628

26 Claims. (014101-212) This application is a division of our prior co-Fig. 4 is a perspective view showing one of pending application, SerialNo. 568,048, filed the type-elements or slides; tober 10, 1931. Fig. 5is a similar view showing an individual This Invention relates toimprovements in decharacter type-unit; 5 vices for printing or recordinginformation, and Fig. 6 is a cross-sectional view of the type-ele- 5particularly to a device of the type specified havment or slide,illustrating ,the same as being ing a printing element which maybe usedas an stamped from sheet-metal;

identification token to be carried on the persons Fig. '7 is a similarsectional view showing the One of the objects of the present inventionconstruction of a cast or embossed type-element;

is to provide a recording or printing apparatus Fig. 8 isa frontelevation of the apparatus or 10 for transferring identifying indlciafrom a quickly press in which the printing element is used; attachableand detachable printing roller or token Fig. 9 is an end view of thesame; and to a blank or other legend-receiving medium. Fig. it is adetailed view of the operating mech- Another object of the invention isto provide anism oi the press. a recording or printing apparatus of thetype in- Our invention in its broadest sense consists 15 dicated havinga carriage movable away from a in a printing cylinder or roller ofconstricted platen on which the blank is held to facilitate diameteradapted to be carried on the person as attachment and detachment of theprinting roller an identification token; and an apparatus to and ortoken, and movable across the platen to record from which the token maybe quickly attached identifying indicia on ablank. and detached. Theapparatus includes a car- 20 Another object of the invention is toprovide riage in which a rotatable element is jonrnaled a recording orprinting apparatus of the type inand the rotatable element and printingroller or dicated having a carriage adapted to rotatably token haveinterengaging means which provide support the printing roller with meansfor quickly a quick detachable connection. The carriage is attaching theroller in looking engagement with mounted for movement away from aplaten to 25 a rotating t; facilitate attachment and detachment of theAnother object of the invention is to provide printing roller or token,and for movement across a recording or printing apparatus of the typeinthe platen ,to record identifying lndicla, on dicated comprising acarriage and printing roller suitable blank. Means are also provided forroadapted for travel across a platen and havi g g e p g oller during itstraversing means for rotating the roller during the move-- ve n ficwsshe platen to obtain clear, legment of the carriage to obtain clear,legible lmible mpressions on the blank. I pressions on a sheet, card orother object. nepamment Stores. and other merchandizin sun anotherobject of the invention is to proestablishments having large clientelesenerally vide a machine of the type indicated which is furnish eachcharge c tomer with some sort of compact in structure, efiicient andpositiv m token or coin bearing indicia by means of which m the customermay be identified to clerks or emoperation and adapted to be easily andcure y 1 with h manipulated by unskilled persons. gfi $11! t l ly em thetoken i shown Further objects of the improvement are set e esperson a t9 time of a P ase and Qil forth in the following specification which de-3231312 2 351? i gg gil sales sup with 40 scribes a preferred form ofconstruction 0f the Another more advanced method of handlin inventiomWay Of example, s illustrated by the charge accounts in large mercantileestablish accompanying drawingsments is to furnish the customer with afiat metal In the drawings: printing plate having raised charactersthereon 45 Fig. 1 is a per p tive view of a printingroller embodyinglndicla for'identifying the holder and and identification tokenconstructed in accordl adapted to print and record the required ancewith t e present invention; information on sales or charge slips.Usually, th

Fig. 2 is an enlarged, lon itudin l Sectional name and address of thecustomer against whose view of the printing roller taken in the plane ofaccount th goods ar to be charged, and in some its axis; instances thenumber or distinguishing symbol F 3 is a nlarged end view of the printof the account, are embossed in type or characters roller showing themethod of mounting the typ on the face of the plate. With this form oftoken elements or indicia slides thereon: the required iniormatlon maybe recorded by tokens are also likely to be confused with ourrencycarried in the purse or pocketbook and therefore are not adapted forconvenient and ready" use. In the case of printing plates, these mustnecessarily be of relatively thin'metal in order to economize in weightand thus they are apt to be bent or broken. Moreover, such plates havesharp edges and corners which are liable to inflict injury to the handor to tear the lining of the purse or pocketbook in which they arecarried.

To avoid the above-stated disadvantages of prior articles of this natureit is a general object of the present invention to provide a small,compact printing and identification device readily distinguishable fromother objects carried in the purse; easy to grasp and adapted forfrequent handling without injury to the hands or annoyance to the user;and also capable of withstanding hard usage and abuse withoutappreciable deterioration.

Referring to the accompanying drawings, the present improved printingroller and identification device 2 is herein shown in its preferredembodiment as comprising a central core or holder 3 in the form of ahollow cylinder carrying a plurality of detachable printing elements inthe shape of segmental strips or slides 4. The print--- ing elements orslides 4 are preferably constructed of sheet-metal formed into arcuateshape in cross-section and'provided on their convex faces withraisedtype or printing characters 5. The longitudinal edges of theslides 4',are bent or folded inwardly to provide marginal flanges orments 8 and each type-element or slide 4 is' shaped with its mainportion adapted to overlie the circumferential face of a segment withits flanges or keys 6 overlapping the sides thereofto provide adovetailed engagement therewith. The slots I. are of suiilcient width toaccommodate the abutting flanges 6 of two contiguous type-elements withthe proper clearance to insure that the latter may be readily slid intoposition longitudinally of the holder.

One end of the holder 3 carries a fixed locating collar 9 with its endproviding a shoulder or abutment i0 against which the ends of theprinting strips 4 seat to aline them in position on the holder. At theother end of the holder 3 is a retaining collar l5 adapted to be forcedonto the periphery of the holder to abut the opposite ends of theprinting elements 4. The retaining collar I5 is provided with a pin I6projecting radially into its bore to adapt it to engage one of theslots. or grooves 'I on the holder 3 to key the collar rotativelytherewith. The

outer end of the collar l5 has its bore reduced 1 in diameter to providea shoulder H which abuts the end of the holder 3 when the collar isplaced thereon. The shoulder ll limits the inward movement of the collarIS on the holder whereby to prevent it from crowding or jamming againstthe printing elements 4. At its outermost end the bore of the collar I5is reduced still further to provide a contracted neck l8 which serves apurpose as later explained. The outer periphery of the collar I5 isprovided at its end with a kerf or keyway 20 for keying it to a rotatingelement in the press or other apparatus in which the printing element isused.

In place of the relatively long printing elements or type-slides 4containing the indicia or legends to be printed, a plurality ofindividual 1 type-units or character-elements 25 such as shown in Fig. 5may be employed. That is tosay, each individual letter or character maybe embodied in a separate element or slide 25 for use in composing aline of type with blanks or slugs as. required to separate the words;thus rendering it possible to print any desired legend from the roller2. Usually, however, in employing the printing roller as anidentification device the longer strips or slides 4 are usedincorporating the customer's name and address. This arrangementgenerally requires only three slides, but in other instances the fourthand fifth slides, as herein illustrated, are convenient for use indesignating the account number and other particulars.

As previously noted, the printing elements or type-slides 4 arepreferably constructed of sheetnietal to adapt them to be stamped outwith hollow type-characters embossed on their convex faces, see Fig. 6.This'may be accomplished in a suitable press having dies for thetype-characters adapted to be set in different combinations. In othercases the printing slides may be die cast from suitable metal with theraised letters embossed and made solid with the main portion of theelement as illustrated in Fig. 4 of the drawings. As a furthermodification in the method of constructing the printing slides, thelatter may have the type-characters separately formed and solderedthereto. v

The improved printing element or roller 2 is adapted for use in anysuitable press either hand or power operated. In other cases itmay beapplied to use in an addressing or like machine by feeding the rollsfrom a hopper or connecting them ina chain. In the present drawingsthere is illustrated a small, compact hand-operated press or printingapparatus suitable for use in mercantile establishments for recordingcharge sales and as a means for addressing tags or envelopes.

As shown in Figs. 8 and 9, the printing device I to which the presentinvention particularly relates comprises a base 30 supporting ananvil-like platen or rest 3| for the sales slip, card, envelope or'otherarticle to be printed. The anvil 3 I overhangs the base 30 and is formedwith beveled edges on its upper side and a tapered or rounded underpartto adapt the paper slip or card to be readily placed on its uppersurface or an envelope to be slid over its end. The flat upper Thecarriage 35 is mounted for pivotal and posite directions whereby to rollthe printing rollersliding movement on a horizontal rod 36 extendingbetween arms or standards 31 rising from the base 30. As shown in Fig. 9the rod 36 is seated in sockets in the top of the standards 31 and heldin place by caps 38 clamped down thereagainst by means of screws 39. Inthe bottom of the carriage 35 is a lateral passageway 40 through whichextends the rod 36, and a pair of rollers 4| journaled between the sidesof the passageway bear against the underside of the rod to provide aneasy sliding action of the carriage therealong. The carriage 35 extendslaterally from the rod 36 in a hooded portion 42 overhanging the platen3| and carrying inking and pressure rollers to be later described.

The printing roller 2 is adapted to be attached to the end of arotatable shaft or spindle 45 journaled in a bearing 46in the mainportion of the carriage 35. The spindle 45 extends laterally across thetop of the fixed rod 36 and has its peripheral portion slotted toprovide gear-teeth 41 meshing with rack-teeth 48 on therod 36, see Fig.10. As shown in Fig. 9 the rack-teeth 48 of the rod 36 extend throughoutthe greater part of its circumference so that when the carriage 35 isrocked upwardly on the axis of the rod a clearance is provided to permitthe teeth 41 on the spindle 45 to slide therearound. Through the gearand rack connection between the spindle 45 and rod 36 the forward andbackward traverse motion of the carriage 35 on the rod imparts rotatingmovement to the spindle in alternately op- 2 across the top of theplaten 3|.

The printing roller 2 is connected to be rotated from the spindle 45 inthe manner as next described. At the outer end of the spindle 45 is anenlarged head or collar 56 having a counterbored-socket 5| for receivingthe end of the retaining collar |5 on the printing roller 2. Projectingaxially into the socket 5| of the collar 50 is a ball-ended bifurcatedclutch-element 52. adapted to be inserted through the constricted neckl8 of the roller 2 to detachably connect the latter to the spindle. Theclutch-element 52 may be constructed in the form of a split pin held inan axial bore.53 of the spindle 45 with its opposite legs 54 formed withenlargements or ballends 55. The legs or prongs 54 of the clutch-element52 are adapted to spring together to permit their enlarged ball-ends 55to slide through the neck l8 of the collar I5 on the printing roller 2in the manner of a snap-fastener.

Projecting radially into the socket or counterbore 5| of the head 56 isa pin 56 adapted to engage in the kerf or keyway 26 on the end of theprinting roller 2 to lock the latter rotatively with the spindle 45. Thepin 56 is so indexed with respect to the gear-teeth 41 on the spindle 45that when it registers with the keyway 20 in the end of the roller 2 thelatter will be correctly positioned to cause it to traverse across theplaten 3| to print its indicia in the proper sequence. It

will be understood that the printing roller 2 may bear against thecircumference of the printing roller 2 or, more properly, on thecollar 9thereof to press the type-characters down into contact with the card orslip placed on the platen 3| A larger inking roller 65 is journaled on ashaft 66 held in suitable bearings 61 at the ends of the hooded portionof the carriage 35. The inking roller 65 may have its surface coveredwith felt or other resilient material to adapt it'to carry a supply ofink to be applied to the faces" of the' type-characters on the printingroller 2. A screw 68 extending down through the top of the carriage 35bearsagainst the inking roller shaft66 to secure the latter in place. I

A handle 10 on the top of the carriage 35 provides convenient means forsliding the latter on the rod 36 whereby to roll the printing roller 2 Vback and forth across the top of the platen 3|. The handle 16 is grippedto raise the carriage 35 by rocking it back on the axis of the rod 36 inapplying the object to be printed to the platen 3| and also forconvenience in connecting the printing roller 2 with and removing itfrom the spindle 45 on the carriage. The method of operation of thecomplete apparatus is as next explained.

When the roller 2 is to be used as an identification token and recordingdevice, the department store orother commercial establishment furnisheseach charge customer with one bearing suitable indicia, such as thecustomers name and address, and other particulars if desired. Uponmaking a purchase to be charged to his account the customer presents thetoken or roller 2 for the purpose of identification and the clerk orsalesperson applies it to the press to record the sale in the manner asnext explained.

With the form of press or printing apparatus herein illustrated theprinting roller 2 is applied thereto by swinging the carriage 35upwardly on the axis of the rod 36 and connecting the roller with therotatable spindle 45. This connection is easilyvand quickly made bysimply inserting the end of the roller carrying the collar I5 into thesocket 5| in the head 50 of the spindle 45 with the clutch-element 52engaged within the bore of the collar. The end of the roller 2 is merelypressed into the socket 5| to cause the ball-ends 55 of the spring-legs54 to snap into place within the constricted neck N3 of the collar IS;the roller being first turned into position to register the keyway 20 atits end with the key or pin 56 which projects into the socket 5|. Theexpanding action of the clutch-element 52 draws the end of the roller 2snugly into the socket 5| and thus positions it with its axis in linewith the axis 1 of the spindle 45. By this connection the outer end ofthe roller 2 is seated against the pressure rolls and 6| which are thusadapted to take the upward thrust of the roller during the printingoperation. In this position of the roller 2 its peripheral characterscontact with the surface of the inking roller which carries a supply ofink applied thereto by hand or. supplied from a suitable reservoir, notshown.

The operator next places the sales slip, card or other object to beprinted on the platen 3| and if duplicate copies are desired severalsheets or slips are laid one over the other with carbon papertherebetween. Usually, the carriage 35 is pushed back into the positionillustrated in Fig. 9 before being swung down to carry the printingroller 2 into contact with the object to be printed. The operator graspsthe handle 10 and draws 70 the carriage forward, or from left to rightas viewed in Fig. 9, to-cause the printing roller 2 to be traversedacross the top of the sheet or card. As the carriage is thus operatedthe engagement lt hasybeen stated that the engagement of thepin ,Or' key56 with the keyway 20 in the end of the roller 2 locates the type matteror character legends thereon in such relation that when the carriage 35is drawn forward from the position shown in Fig. 9 the several lines oftype will be printed in proper sequence. That is to say, the roller 2 isso applied to the press that the line of type for the customer's namewill print first with the address and other particulars following. Thecarriage 35 may he slid back and forth'to traverse the roller severaltimes across the object to be printed whereby to insure a strongimpression of the type-characters and also clear and legible carboncopies on the under sheets. The positive engagement of the teeth 41 onthe spindle 45 with the rack-teeth 48 on the rod 36 insures that therepeated impressions will register accurately without blurring orsmudging.

After the record has been made on the sales slip, card or other objectthe carriage 35 is lifted away from the platen 3| and the printingroller 2 removed therefrom and returned to the customer. The printingroller 2 is detached from the press by simply withdrawing it from thesocket Si in the headof the spindle 45, a slight pull serving to releasethe clutch-element 52 from the constricted neck of the collar. on theroller.

In order thatink remaining on the type faces of the printing roller maynot cause inconvenience by soiling the hands or staining the lining'ofthe pocketbook the roller is usually provided with a sheath or case. Forexample, a light metal cylinder may be used as a casing for the token orprinting roller 2 with a suitable cover clos ing its end. Preferably,the receptacle or protecting case for the printing roller should havemeans for looking it thereon in such manner that it can only be releasedby the person authorized whereby to eliminate the danger of the tokenbeing used to defraud. Such a form of holder for the printing roller ortoken is embodied in an invention forming the subject matter of aseparate application. It will be observed from the foregoing that ourinvention provides a particularly simple and efficient device for thevarious purposes specified or for any use where information oridentifying indicia is to be registered or recorded on'a sheet, card,envelope or other object.

While the improved printing roller is herein shown and described asadapted for use as an identification token and for recording informationrelative to sales or the like, it is also applicable to other varieduses. i

It will also be observed that the apparatus of the present inventionprovides for a quick attachment of the printing roller or token to arotating element on the carriage and a quick detachment of the rollerfrom the element. Further, the token may be attached to and detachedfrom the apparatus and the apparatus operated by an unskilledsalesperson to record identifying in? dicia in clear and legibleimpressions on a sheet or other blank.

While the present device has been herein de scribed and illustrated asembodied ina preferred form of construction, it is to be understood thatvarious modifications may be made in the form and arrangement of itsparts, both as to the printa printing roller having indicia characterson its periphery, a. carriage movable with respect to the platen,interengaging means on the roller and carriage self-acting to detachablyconnect the roller to the carriage as one is moved axially intoengagement with the other, and means for rotating the roller as thecarriage is moved across the platen.

3. In a recording apparatus, the combination of a platen for supportingan object to be printed,

' a printing roller having indicia characters on its periphery, acarriage slidable with respect to the platen, means-on the carriage forrotating the roller as the carriage is moved with respect to the platen,and interengaging snap-fastener means on they roller and rotating meansmovable axially into engagement one with the other, one of said meanshaving a resilient element adapted to yield as the roller is snappedinto engagement with the rotating means;

4. In a recording apparatus, the combination of a slidable carriage, arotatable spindle on the carriage, means operated by the sliding motionof the carriage for rotating the spindle, a roller having printingcharacters on its periphery, and an automatically operative clutch forreleasably connecting the roller to be rotated from the spindle.

5. In a recording apparatus, the combination of a slidable carriage, arotatable spindle on the carriage, means operated by-the slidingmovement of the carriage for rotating the spindle, a printing rollerhaving type-characters on its periphery and a socket at its end, and aresilient clutch-element on the spindle for releasably engaging thesocket to connect the roller with the rotatable spindle on the carriage.

6. In a recording apparatus, the combination of a platen, a carriagemovable to traverse it with respect to the platen, a rotatable spindleon the carriage, gearing for rotating the spindle during the traverse ofthe carriage, a printing roller having indicia characters on itsperiphery, and interengaging means on the printing roller and spindlemovable axially into engagement one with the other and self-acting toreleasably clutch the roller and spindle together.

7. In a recording apparatus; the combination of a platen, a gear-rackextending parallel with the platen, a carriage slidable longitudinallyof the gear-rack, a rotatable spindle on the carriage geared to therack, a printing roller, and ball-and-socket means on the printingroller and spindle for releasably connecting said elements whereby torotate the printing roller during its traverse with the carriage.

8. In a printing apparatus, the combination of a platen, a carriagereciprocable with respect to the platen, a spindle rotatable on thecarriage means for rotating the spindle during the reciprocation of thecarriage, a printing roller having indicia characters on its periphery,a clutch for detachably connecting one end of the printing roller to thespindle for rotation thereby during the traverse of the carriage, andbearing means on the carriage engaglngthe opposite end of the roller formaintaining the printing roller in contact with an object held on theplaten.

9. In a recording apparatus, the combination of a reciprocable carriage,a rotatable spindle on the carriage, means for rotating the spindleduring the reciprocation of the carriage, a printing roller havingindicia characters on its periphery and an opening in its end formedwith a constricted neck, and a clutch-element on the spindle havingresilient ball-ended members for insertion through the neck of theopening in the roller to attach the latter to the spindle.

10. In a recording apparatus, the combination of a fixed platen, acarriage, means for mounting the carriage for movement across the platenand for rocking movement toward and away'irom the platen, means on thecarriage engaging the mounting and adapted to be rotated thereby duringthe movement of the carriage across the platen, a printing roller havingindicia characters on its periphery, and means for releasably connectingthe printing roller with the rotatable means on the carriage.

11. In a recording apparatus, the combination of a platen, a trackextending longitudinally of the platen, a carriage, means on thecarriage for mounting it on the track for sliding movement across theplaten and for rocking movement toward and away from the platen, aprinting roller having indicia characters on its periphery, means on thecarriage rotatable during its sliding movement, and means for connectingthe printing roller with said rotatable means.

12. In a recording apparatus, the combination of a standard, a platenfixed on the standard, a cylindrical rack-bar extending longitudinallyof the platen, a carriage having bearings embracing the rack-bar tomount the carriage for sliding and pivotal movement with respect to theplaten, a gear on the carriage engaging the teeth of the rack-bar toadapt it to be rotated therefrom during the sliding movement of thecarriage, and a printing roller attachable to the carriage forconnection with the gear to adapt it to be rotated thereby across theface of the platen.

13. In an apparatus of the type indicated, the combination of a platen,a supporting rod extending longitudinally of the platen and havingrackteeth formed thereon, a carriage pivotally mounted on the rod. andslidable therealong, a spindle journaled in the carriage and providedwith gear-teeth engaging the rack-teeth on the rod, a printing rollerhaving indicia characters on its periphery, and means for detachablyconnecting the printing roller with the end of the spindle in positionabove the platen to adapt it to be rolled across the face thereof whenthe carriage is traveled on its supporting rod.

14. In an apparatus of the type indicated, the combination of a platen,a fixed rod extending along the side of the platen and formed withrack-teeth, a carriage mounted on said rod for sliding movement acrossthe platen and for rocking movement toward and away from the platen, aspindle journaled in said carriage, a gear on the spindle engaging therack-teeth on the rod, a printing roller having indicia characters onits periphery, and means for clutching the printing roller to thespindle to adapt it to be rolled across the platen during the travel ofthe carriage on therod.

15. In an apparatus of the type indicated, the combination of a base, aplaten on said base, a

rod supported from the base in parallel relation to the platen andformed. with rack-teeth on its side, a carriage having bearingsembracing the rod to mount it for sliding and rocking movement thereon,a spindle journaled in the carriage, a gear on the spindle engaging therackteeth on the rod, a printing roller having indicia characters on itsperiphery, and means for detachably connecting the printing roller withthe spindle to adapt it to be rotated therefrom to roll it across theplaten as the carriage is traversed on the rod.

16. In an apparatus of the type indicated, the combination of a support,a platen on said support, a carriage travelable on the support, a rackon the support, a spindle journaled in the car riage, a gear on thespindle arranged with its teethenga'ging the rack, a pair of rollers onthe carriage, a printing roller having indicia on its periphery, meansfor rotatably mounting the printing roller on the carriage in peripheralcontact with the rollers thereof, and means for rotatably connecting theprinting roller with the spindle.

17. In an apparatus of the type indicated, the combination of a support,a platen on said support, a carriage, a pivot on the support formounting the carriage for swinging movement from a horizontal printingposition to a vertical inoperative position, said carriage beingslidable on its pivotal mounting, a printing roller on said carriage,and means for rotating the printing roller during the sliding movementof the carriage.

18. In an apparatus of the type indicated, the combination of a support,a platen on said support, a rack-bar on said support, a carriage piv-'otally mounted on said bar for rocking movement from a horizontalprinting position to a Vertical inoperative position, said carriagebeing slidable along the rack bar, a printing roller on said carriage,and a pinion engaging the rack for rotating the printing roller duringthe sliding movement of the carriage across the platen.

19. In an apparatus of the type indicated, the combination of a support,a carriage mounted for movement on said support, a driving spindle onsaid carriage, means for rotating the driving spindle during themovement of the carriage on the support, and a printing roller drivablyconnected with the spindle and having bearing collars, said collarsrotatably supporting the roller in the carriage.

20. In an apparatus of the type indicated, the combination of a support,a platen on said support, a carriage mounted for movement'on saidsupport, bearing rollers on said carriage, a driving spindle on saidcarriage, means for rotating the driving spindle during themovement ofthe carriage on the support, a printing roller having a bearing collarat one end engaging the bearing roller on the carriage and a drivingcollar at the opposite end having a bearing surface for engaging thedriving spindle, and means for drivingly connecting the collar to thespindle.

21, In an apparatus of the type indicated, the combination of a platen,a carriage movable across the platen, a printing roller having a collarat each end, and spaced independent supports on the carriage fordetachably engaging the collars on the roller to rotatably support theroller on the carriage.

22. In an apparatus of the type indicated, the combination of a platen,a carriage movable across'the platen, a printing roller having a hearingcollar at one end with an internal recess, a

spindle on the carriage having means for engaging the internal recess insaid collar to rotatably support one end of the roller, inter-engagingmeans on the collar and spindle for drivingly connecting eral bearingsurface on the collar to rotatably support the opposite end of theroller.

23. In a recording apparatus, the combination of a platen, a carriage,means for mounting the carriage fortraversing movement across the platenand for rocking movement toward and away from the platen, a printingroller, and interengaging means on the roller and carriage selfacting tolock the parts together as one is moved axially into engagement with theother, said carriage being rockable away from the platen to facilitatethe mounting of the printing roller on the carriage.

24. In a-recording apparatus, the combination of a platen, a supportingrod positioned in a plane parallel to the platen, a carriage havingbearings embracing the rod to mount the carriage for sliding and rockingmovement thereon, said carriage being adapted to traverse the platenwhen slid on the rod and to move toward and away from the platen whenrocked on the rod, a printing roller,

and means for detachably mounting theprinting roller on the carriagewhen the latter is rocked away from the platen.

25. In a recording apparatus, the combination of a fixed support, acarriage, a printing roller, inter-engaging means on the carriage andprinting roller for detachably mounting the roller to rotate on thecarriage, and means for mounting the carriage on the support to adapt itto travel in a predetermined path and to rock about an axis atright-angles to'the axis of the printing roller whereby the carriage maybe moved away from the support to facilitate attachment and detachmentof the roller.

26. In a recording apparatus, the combination of a fixed platen, acarriage, a printing roller, interengaging means on the carriage andprinting roller for detachably mounting the roller to rotate on thecarriage, and means for mounting the carriage to adapt it to traversethe platen and to rock about an axis at right-angles to the axis of theprinting roller whereby the carriage may be moved through a substantialangle from an operative to an inoperative position with respect to theplaten to facilitate attachment and detachment of the roller.

- ELMER W. DAVIS.

ARTHUR H. MAYNARD.

